NATIONAL OILWELL VARCO INC

CUSIP: 637071101 Class: COM

Artisan Partners Limited Partnership's Holding History (CIK: 0001466153)

Note: Option positions (PUT/CALL) are excluded.

Q3 2014
Shares 808,478 Value ($000) $61,525 Avg Close — Range —
Q2 2014
Shares 813,972 Value ($000) $67,031 Avg Close — Range —
Q1 2014
Shares 803,656 Value ($000) $62,581 Avg Close — Range —
Q4 2013
Shares 1,187,166 Value ($000) $94,415 Avg Close — Range —
Q3 2013
Shares 1,154,713 Value ($000) $90,195 Avg Close — Range —
Q2 2013
Shares 1,066,827 Value ($000) $73,504,380 Avg Close — Range —